Shuttle tip



April 8, 1924. 1,489,584

E. L. TINKHAM SHUTTLE TIE Filed July 2, 1923 v lnvhTor. E lqgene-L. TlnKham Patented Apr. 8., 3924 UNLTED EUGENE L. TINKHAM, OF HGPEDALE, MASSACHUSETTS, ASSIGNOR TU DBAPER 09R- PORATION, OF HOPEDALE, MASSACHUSETTS, A GOR-IPORATION \OF MAINE.

SHUTTLE TIP.

Application filed July 2,

To all whom it may concern:

Be it known that l, EUGENE L. TINKHAM, a citizen of the United States, and resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Shuttle Tips, of which the tollowing description, in connection with the accompanying drawing, is a specification, l ke characters on the drawing representing like parts.

This invention relates to shuttles such as are used in looms for weaving and particularly to the metal tip construction w1th which such shuttles are usually provided and means for locking such tip device in place in the wooden shuttle body. The shuttle tip is provided primarily to receive the blow of the icker and thus prevent damage to the wood of which the shuttle body is made.

c The object of the invention is to provide a form of construction which will insure the interlocking of the wooden shuttle body and the metal tip so as to prevent loosening or separation of the tip from the shuttle hotly notwithstandin the severe usage to whici the ti end of the shuttle is necessarily subjec in use.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

As this invention relates solely to the construction at the ends of the shuttle and as both ends of the shuttle have the same construction it is only necessary to describe and illustrate an application of the invention to one end of a. shuttle.

In the drawings:

Fig. 1 is an elevation partially in central cross section of one end of the wooden body of an ordina loom shuttle bored out to receive a, meta tip and a metal annulus in accordance with the present invention;

Fi 2 is a. view similar to Fig. 1 showing t metal annulus and the metal tip insorted in their respective bores and brought into contact ready to be driven into final position; 7

Fig 3 is a view similar to Fig. 2 showing the metal annulus and metal tip driven into place. The shuttle body may shape and size and be of any desired is usually made of hard description and 1923. Serial No. 648,899.

close-grain wood such as dogwood or persimmon. The metal tip structure in the preferred form of the invention comprises two separate pieces, namely, a metal an nulus and a metal tip comprising a conoidal head and a cylindrical shank extending axially from the flat base of the head.

The end of the Wooden shuttle body 1 is generally slahhed oil at 2 to present a fiat end. In this end of the shuttle body there are formed two concentric bores. The central bore 3 is of cylindrical form and of a diameter tofit tightly the shank of the tip. The annular bore 4 is formed concentrically of the cylindrical bore 3 and receives with a tight fit the metal annulus. These bores may he formed simultaneously or successively by any suitable operation.

In describing the metal annulus and the metal tip the terms upper and -upivardly will he used as indicating direction longitu dinally away from the center of the shuttle, thetermfilower as indicating direction longitudinelly toward the center of the shuttle, andf' th e ter i inwardly as indicatingdirection toward the longitudinal axis of the shuttle, but it will he understood that these terms are merely used for convenience in are to be taken relatively. The metal annulus is of the general shape of a hollow cylinder as shown in cross'section in Figs. 2 and 3 It may be considered as divided into two sections, a lower section 5 and en'upper section 6. The lower section is preferably bevelled ed, as shown at 7, at its lower end. The exterior surface of this annulus is cylindrical throughout. The upper section 8 at the inner surface converges upwardly and inwardly to its'upp'er end as indicated at 8.

The metal tip comprises a head 9 of conoidal shape having a flat base 10 and a cylindrical shank 11 projecting axially from the center of the base of the head. This shank may be ond usually is, provided with means such as a helical groove 12 to afford a frictional engagement with the wood of the shuttle body. The upper section oi the shank 11 converges upwardly and inwardly at 13 in coniormit with the upper section of the metal an'nu us. The construction is such that when the head 9 of the tip engages the upper end of the annulus the inner surface 8 or the upper section of the annulus fit) and the upper section 13 of the shank con- 2. In the next step of the method the tip is forced into final position in the shuttle body thus carrying with it the metal annu lus. Since the tip shank and the metal anuulus are thus simultaneously forced into place, the annulus 14 ot' the wood of the shuttle body which extends between the metal annulus and the tip shank at the up per end of the shuttle body is brought between the converging upper sections of the annulus and tip shank and crowded over the upper section of the shank thus firmly lock,- ing the tip in place as shown in Fig. 3.

The degree of convergence of the inner surface of the upper section of the metal annulus and of the upper section of the tip shank must be such,as not materially to weaken the metal tip and must be such as not to destroy or break down the fibre of the wood of the shuttle body in the annulus 14.-

This convergence is probably somewhat exaggerated for purposes of illustration in the drawings p The construction thus provided insures a firm locking engagement between the wood of the shuttle body and the shank of the tip and the maintenance of this locking relation by the position of the-metal annulus when the parts are in place. Since the metal tip and the metal annulus are forced in simultaneously, the exact relation of the wood of the shuttle body and the metal parts at the locking point is insured.

There is thus produced a very simple and elfieient construction in this vital feature of a loom shuttle.

Having thus described the 1nvention,what is claimed as new and desired to be secured by Letters Patent, iS

1. A shuttle comprising a WUUUUU oody; a metal tip having a conoidal head. with its base seated against the end of the shuttle body, having a cylindrical shank embedded in the body and having the upper-section of the shank adjoining the base of the conoidal head converging upwardly and inwardly; and a metal annulus embedded in the body concentrically of the tip shank and having the inner surface of its upper section opposite the upper section of the tip shank eonverging upwardly and inwardly with the wood of the shuttle body between the converging upper sections of the annulus and tip shank crowded inwardly over the upper section of the shank and locking the tip in place.

2. A metal tip and a metal annulus for a shuttle; the metal tip havin a oonoidal head and a cylindrical shank, t e upper section of the shank adjoining the base of the conoidal head converging upwardly and inwardly; the metal annulus having its internal diameter substantially greater than the external diameter of the ti shank and having the inner surface of its upper section converging upwardly and inwardly in conformity withthe upper section of the tip shank In testimony whereor, 1 navesigned my name to this specification.

EUGENE L. TINKHAM. 

